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comparison src/os/unix/ngx_atomic.h @ 435:5cdc4838d4e8

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nginx-0.0.11-2004-09-22-20:18:21 import
author Igor Sysoev <igor@sysoev.ru>
date Wed, 22 Sep 2004 16:18:21 +0000
parents 9a97dcdd2421
children da8c5707af39
comparison
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434:8998b09f89e9 435:5cdc4838d4e8
5 #include <ngx_config.h> 5 #include <ngx_config.h>
6 #include <ngx_core.h> 6 #include <ngx_core.h>
7 7
8 8
9 #if ( __i386__ || __amd64__ ) 9 #if ( __i386__ || __amd64__ )
10
11 #define NGX_HAVE_ATOMIC_OPS 1
10 12
11 typedef volatile uint32_t ngx_atomic_t; 13 typedef volatile uint32_t ngx_atomic_t;
12 14
13 #if (NGX_SMP) 15 #if (NGX_SMP)
14 #define NGX_SMP_LOCK "lock;" 16 #define NGX_SMP_LOCK "lock;"
31 33
32 return old; 34 return old;
33 } 35 }
34 36
35 37
38 #if 0
39
36 static ngx_inline uint32_t ngx_atomic_dec(ngx_atomic_t *value) 40 static ngx_inline uint32_t ngx_atomic_dec(ngx_atomic_t *value)
37 { 41 {
38 uint32_t old; 42 uint32_t old;
39 43
40 __asm__ volatile ( 44 __asm__ volatile (
45 49
46 : "=q" (old) : "0" (-1), "m" (*value)); 50 : "=q" (old) : "0" (-1), "m" (*value));
47 51
48 return old; 52 return old;
49 } 53 }
54
55 #endif
50 56
51 57
52 static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock, 58 static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock,
53 ngx_atomic_t old, 59 ngx_atomic_t old,
54 ngx_atomic_t set) 60 ngx_atomic_t set)
67 return res; 73 return res;
68 } 74 }
69 75
70 76
71 #elif ( __sparc__ ) 77 #elif ( __sparc__ )
78
79 #define NGX_HAVE_ATOMIC_OPS 1
72 80
73 typedef volatile uint32_t ngx_atomic_t; 81 typedef volatile uint32_t ngx_atomic_t;
74 82
75 83
76 static ngx_inline uint32_t ngx_atomic_inc(ngx_atomic_t *value) 84 static ngx_inline uint32_t ngx_atomic_inc(ngx_atomic_t *value)
97 old = res; 105 old = res;
98 } 106 }
99 } 107 }
100 108
101 109
102 /* STUB */
103 #define ngx_atomic_dec(x) (*(x))--;
104 /**/
105
106
107 static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock, 110 static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock,
108 ngx_atomic_t old, 111 ngx_atomic_t old,
109 ngx_atomic_t set) 112 ngx_atomic_t set)
110 { 113 {
111 uint32_t res = (uint32_t) set; 114 uint32_t res = (uint32_t) set;
119 return (res == old); 122 return (res == old);
120 } 123 }
121 124
122 #else 125 #else
123 126
127 #define NGX_HAVE_ATOMIC_OPS 0
128
124 typedef volatile uint32_t ngx_atomic_t; 129 typedef volatile uint32_t ngx_atomic_t;
125 130
126 /* STUB */ 131 #define ngx_atomic_inc(x) ++(*(x));
127 #define ngx_atomic_inc(x) ++(*(x)); 132
128 #define ngx_atomic_dec(x) --(*(x)); 133 static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock,
129 #define ngx_atomic_cmp_set(lock, old, set) 1 134 ngx_atomic_t old,
130 /**/ 135 ngx_atomic_t set)
136 {
137 return 1;
138 }
131 139
132 #endif 140 #endif
133 141
134 142
135 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin); 143 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin);